3 papers
gr-qc2026
The effects of non Bunch-Davies initial conditions on gravitationally produced relics
Enrico Bertuzzo, Gabriel M. Salla, Andrea Tesi
Typical gravitational production of relics from amplification of inflationary perturbations assumes Bunch-Davies initial conditions, i.e. a vacuum with initially no particles. In t…
hep-ph2026
Two portals to GeV sterile neutrinos : dipole versus mixing
Enrico Bertuzzo, Michele Frigerio
Massive sterile neutrinos, also known as heavy neutral leptons, can have a mixing with active neutrinos, , as well as a dipole coupling to the photon, . We study the interpl…
hep-ph2026
Electroweak Precision Constraints on Dark Photon Models with Generalized Mixing
Enrico Bertuzzo, Csaba Csaki, Fernanda Huller
We present a global fit to electroweak precision observables (EWPOs) in dark photon (DP) models containing both kinetic and mass mixing between the DP and the neutral gauge bosons…